Format
Data frame containing:
TAG - A 10 character hexadecimal code unique to each individual
RING.NUMBER - A 7 character unique ring (or band) number for each individual
SPECIES - Each species, where BLUTI=blue tit, COATI=coal tit, GRETI=great tit, MARTI=marsh tit, and NUTHA=nuthatchSource
Farine, D.R., Garroway, C.J., Sheldon, B.C. (2012) Social Network Analysis of mixed-species flocks: exploring the structure and evolution of interspecific social behaviour. Animal Behaviour 84: 1271-1277.